Ernest w



E. w. DAVIS M 10 1932 I LUBRICATING SYSTEM 18 459 Original F11ed April11, 1925 I. Q

. 16 J0 I v Fa? WWW/1a Reissued M... 10, 1932 UNITED STATES PATENTOFFICE ERNEST W. DAVIS, 01 OAK PARK, ILLINOIS, ASSIGNOR TO ALEMITECORPORATION, OF

CHICAGO, ILLINOIS, A CORPORATION OF DELAWARE Original No. 1,818,464,dated August 11, 1931, Serial No. 22,489, filed April 11, 1925.Application for reissue filed October 24, 1931. Serial No. 570,987.

My invention relates to lubrication and more specifically to 'animproved lubricating system for efficient periodic lubrication of arelatively large number of machine element Without waste of lubricant.

Among the objectsand advantages of the invention may be enumerated:First, the provision of a simple and efficient means for simultaneouslylubricating a plurality of different bearings at a single operation. r

Second, he automatic apportionment of the oil to the diflerent bearingsin proportion to their needs."

chinery to be lubricated.

Fifth, the elimination of lubricant storage means fastened to themachine itself.

' Further objects and advantages of the in-' vention will becomeapparent as the descrip-' 'tion proceeds. p

In the accompanying drawings: Figure 1 is a plan vlew of a machine unitindicating the application of a lubricating system according to theinvention thereto.

' minal device.

Figure 3 is a section on line 33. of Figure 1. I

. Figure 4 is a section of the lubricant dispenser. I 1 Figure 5 is anend view, of the discharge end of the'dispenser.

Figure 6 is a section on line 66 of Figure 4. I

Figure 7 is a perspective of the end casting .for the dispenser showinga modification in the arrangement of the apportioning means. In theembodiment of the invention selected for illustration the system isshown as applied to an appropriate unit of machinery such as the frontaxle of an automobile. The axle 10 carries the usual wheels 12 onsteering knuckles 14 pivoted at 16. f The web of the axle is bored at 18to receive fastening bolt 20 for fastening in place the tube 22. The

Third, a mehanism readily attached to Figure 2 is a front elevation ofthe ter-- outer end of tube 22is flared to form a plate '24 in which aremounted a plurality of terminal fittings 26 for the reception oflubricant. These terminals preferably, but not necessarily, include ballcheck valves 28.

From each terminal 26 an individual tube 30 I on the outside of the nutto retain the cup Washer 50.

The bottom cap 52 is formed with a plurality of peripherallysp-acedbores 56 corresponding to the receiving fittings 26, each borehaving a shoulder at 58 toholdthe sealing Washer 60 against the force ofspring 62. Beyond the shoulder the bore is enlarged again at 64toreceive the head 66 of its fitting,

7 Which head engages the sealing gasket and.

lifts it off shoulder 58 so that spring 62 presses the gasket againstthe head to form a tight seal when the parts are'co'nnected. Theopenings at thebottom of the bottom plate are in the form of key holeslots each having an enlarged portion 68 .capable of receiving the head66 and a slot portion 70 adapted to receive the shank, whereby aretaining flange 72 is formed to engage the underside of the head andhold the parts in place. The dis penser is simultaneously connected withall.

.the receiving fittings by pushing it axially overthem and after theheads have passed through openings 68 rotating the whole devicecounter-clockwise as seen in Figure 5 to move all thefittings into theslots. To facilitate connecting parts, Iprovide an axial pin 74projecting from the center of part 52 and adapted to enter the. bore 76in tube 22 to keep the dispenser and fittings in alignment. A lateralopening 78 is provided to preventbore 7 6 from becoming clogged withdirt. 1

I have provided suitable means for automatically dispensing to eachfitting during a single rotation of shaft 40 an appropriate smallmeasured dose of lubricant. Plate 80 fits over the upper surface of endcap 52 and retains all the springs 62 in place, being itself held byabutment at its outer edge with the end of tube 32 and clamped againstsaid edge by threading the bottom cap 52 in place. Shaft 40, beyond thethreaded portion 44, has a short cylindrical portion 82 and a smallersquared portion 84. Distributing plate 86 has a square central hole toreceive part 84,

and rotates in close fitting engagement with plate 80 by reason of thetension of spring 88encircling part 82 and bearing against a yoke 90carried by plate 86. Plate 80 is provided with a series of openings 92,one for Y each bore 56, and plate 86 is provided with a slot 94 radiallyspaced to register 1n succession with each of the openings 92 andconnect the dispenser during a predeterminedportion of a revolution withthe particular fitting in question. It will be apparent that rotation ofhandle\42 will not only force the piston axially toward the bottom ofthe dispenser but connect the body of lubricant being expelled by thepiston in series with each of the discharge connections previouslydescribed. The pitch of threads 44 is preferably such that thefriction-of the piston on the barrel 32 is all that is required toprevent the piston from rotating with the shaft.

Without further elaboration, the forego- I ing will so fullyexplain thegist of my invention, that others may, by applying current knowledge,readilyadapt the same: for use under various conditions of service. Itwill,

.for instance, be obvious that where the different bearingsrequiredifferent amounts of lubricant, openings 92 may themselves be slots ofvarying length, although preferably the entire circumference is so laidout that the clearances between successive openings, 92 .are'all equal,and that slot 94 is of the exact length necessary to bridge saidclearance, sothat no two discharge'connection's will ever be open at thesame time and thus connectedv to each other, and at the same time noappreciable intervals will occur when there is'rno exit for thelubricant Thus, in Figure 7 .there are two long slots 96 in plate 80,and two a 96 will be holes 92. To permit this change without changingthe structure of bottom piece 52 one of the two fittings'fconnected witheach slot plugged, and only four delivery tubes will lead away to the.parts to be lubricated. This and many-other modifications andalterations may .readily'be madeby those skilled in the art withouteliminating certain features which may properly be said to constitutethe essential items of novelty involved,

which items arev intended tobe defined and secured to me by thefollowing claims; Iclaim:, V

1. A portable lubricant gun comprising a for connecting the reservoirbody having a plurality of ports each adapted for quick detachableconnection with a .conduit, individual conduit sealing means in eachport, a rotatable shaft in said body, a lubricant compressing elementmoved longitudinally by rotating said shaft, and a distributor rotatingwith said shaft for connecting the compressed lubricant with each ofsaid ports seriatim.

2. A lubricant gun having a plurality of ports each port having meansfor making a quick detachable connection with-a lubricant receivingconduit, compressing means in said gun, a distributing device forcontrolling the delivery of the lubricant to the different ports, and acommon manual drive element forming the sole means for actuating bothsaid compressing means and said distributing device. I v

3. A lubricant gun having a plurality of ports each port having meansfor making a quick' detachable connection with a lubricant receivingconduit, lubricant compressing means in said gun, and a distributoractuated by operation of said compressing means for automaticallyapportioning the lubricant among the different ports.

4. Apressure lubricating system comprising a portable lubricant gunhaving a plurality of discharge ports, a plurality of lubricant conduitsconverging from points to be lubricated to terminate adjacent eachother, and quick detachable 5. A pressure lubricating systemcomprischarge ports, a plurality of lubricant conmeans for cou- I phngsa d gun to all said conduits.

duits converging from points to be lubricated r to terminate adjacenteach other, quick .detachable means for coupling said gun to all saidconduits, and distributing means in said gun for delivering individuallymeasured quantities of lubricant seriatim to said discharge ports.

6. A pressure lubricating system comprisinga plurality of lubricantconduits converging from points to be lubricated to tera'lubricant gun,

minate adjacent each other, quick I detachable connections between saidconduits and said gun, andfiautomatic -means of'said each of saidconduits, one at a time.

' 7. A pressure lubricating system compris- 1 ing a gun, having aplurality of external ports equally spaced about the periphery of ac1rcle,a mechanism inside said gun for delivering measureddosesof-lubricant to each port, a support, a plurality of receivingter-- minals on said support spaced about the periphery ofa circle, saidports and terminals being shaped forlbayonet slot interengagement toconnect said gun to all said terminals,

. said support having an axial bore, an axial pm on said gun enteringsaid bore to center:

the gun, and support, and delivery conduits gun with a from saidterminal to points to be lubricated.

8. A pressure lubricating system comprising a gun having a plurality ofexternal ports equally spaced about the periphery of a circle, amechanism inside said gun fordelivering measured doses of lubricant toeach port,seriatim, a support, a plurality of receiving .terminals onsaid support spaced about the periphery of a circle, said ports andterminals being shaped for bayonet slot interengagement to connect saidgun to all said terminals, said support having an axial bore, an axialpin on said gun entering said bore to center. the gun and support, anddelivery conduits from said terminals to points to be lubricated,

9. A pressure lubricating system compris ing a gun having a plurality ofexternal ports equally spaced about the periphery of a circle, amechanism inside said gun for delivering measured doses of lubricant toeach port,

' a support, and a plurality of receiving terminals on said supportspaced about the periphery of a circle, said ports and terminals beingshaped for bayonet slot interengagement to connect said gun to all saidterminals.

10. A- pressure lubricating system comprising a portable gun having aplurality of ex-.

ternal ports equally s aced about the periphery of a circle, a mec anisminside said gun for delivering measured doses of lubricant to each port,a support permanently mounted upon the machine to be lubricated, and aplurality of receiving terminals on said support spaced about theperiphery of a circle to register-With and be detachably connected tothe gun establishing communication between the terminals and said ports.

11. A pressure lubricating system compris-' ing a gun having a pluralityof external ports equally spaced about the periphery of a circle, amechanism insidesaid gun for delivering measured doses of lubricant toeach port, and a plurality of receiving terminals spaced about theperiphery of a circle to register with said ports and adapted for quickdetachable connection therewith.

12. A pressure lubricating system comprising a plurality of conduitsleading to a plurality of points to be lubricated, said conduitsconverging to terminate adjacent each other, a check valve at the inletend of each conduit opening toward the point to be lubricated, a unitarydevice for delivering a measured quantity of lubricant to each conduitand quick detachable means for coupling said device to said conduits.

13. A pressure lubricating system compris ing a plurality of conduitsleading to a plurality of points to be lubricated, said conduitsconverging to terminate adjacent each other, a check valve at one end ofeach conduit opening toward the point to be lubricated, and a device fordeliverin a measured quantity of lubricant to each conduit at eachoperation thereof, said device being portable relative to said conduitsand having means for simultaneously making a mechanical connection withall of said conduits.

14. A pressure lubricating system compris ing a plurality ofconduitsleading to a plurality of'points to be lubricated, said conduitsconverging to terminate adjacent each other, a check valve in eachconduit opening toward the point to be lubricated, and portable meansfor delivering lubricant to said conduits, said means including quickdetachable connections whereby it may be simultaneously connected to allof said conduits.

15. A pressure lubricating system comprising a plurality of openconduits leading to a plurality of points to be lubricated, saidconduits converging to terminate adjacent each other, a check valve atthe inlet end of each conduit opening toward the point to be lubrihated,and means. for simultaneously connecting a' p'lurality of lubricantdischarge ports to said conduits. v

16. A pressure lubricating system comprising a plurality of openconduits leading to a plurality of points to be lubricated, saidconduits converging to terminate adjacent each other, a check valveat'the inlet end of each conduit opening toward the point to belubricated, and a quick attachment terminal for each conduit.

17. lubricant gun comprising a body having a plurality of ports, adistributor covering said ports, resilient means keeping saiddistributor sealed over said ports, compressing meansin said body, and adriving connection between said compressing means and said distributor,said driving connection and said resilient means operatingindependently.

18. A lubricant gun comprising a body having a plurality of ports, adistributor covering said ports, resilient meanskeeping said distributorsealed over said ports, compressing means in said body, and a drivingconnection between said compressing means and said distributor.

19. A motor vehicle lubricating system for motor vehicles having" aframe and axles .movable with respect thereto, comprising a set ofconduits leading from a plurality of elements requiring lubrication andcarried by the same axle, said conduits terminating adj acent each otherat a point on said axle, and unitary portable means for simultaneouslymaking a coupling connection with the ends of all of said conduits andthereafterinjecting lubricant into all said conduits.

20. A motor vehicle lubricating system for motor vehicles having a frameand axles movable with respect thereto, comprising a set of conduitsleading from a plurality of elements requiring lubrication and carriedby the same axle, said conduits terminating adjacent each other at apoint on said axle, and unitary means for simultaneously making a havingquick, detachable connecting means for coupling connection with theends-of all of said conduits and thereafter inj'ecting lubri cant intoall said conduits seriatini.

' 21. A lubricant gun comprising a body having a'plurality of ports, aplurality of conduits adapted to register with said ports and mechanicalattachment thereto, individual conduit sealing means in each port, andlubricant compressing means in sald body.

' 22. A lubricating system comprising a plu rality of conduits forconducting lubricant to various bearings of a mechanism, a commontermlnal for all of said conduits, a lubricant compressor having meansfor making a quick detachable sealed connection with'said terminal, andmeans for determining the quan-- tity of lubricant supplied to each ofsaid said conduits and said gun'having quick de tachable inter-engagingmeans adjacent said ports whereby said conduits may be simultaneouslyconnected to said gun in communi cation with said ports. g

25. The combination of a lubricant compressor having a plurality ofdischarge ports,

a plurality of lubricant receiving fittings adapted to register withsaidports, and cooperating means on said compressor and said fittings formaking quick detachable connections therebetween', said last named meansbeing operable by movement of said com-' pressor relative to saidfittings.

' 26. The combination of a lubricant compressor having a plurality ofdischarge ports, a plurality of lubricant receiving fittings adapted toregister with said ports, cooperating means on said compressor and saidfittings for simultaneously makingquick detachable mechanicalconnections therebetings adapted to register "1 with said ports tween,and means for sealing said .connections. I '7 V 27. The combination of alubricant compressor comprising a plurality of discharge ports, aplurality of lubricant receiving fitand mounted upon; a common supportmovga-ging means on said compressor-and -said support for guiding all ofsaid ports into registry with said fittings;

-. I 28. 'In combination, a portable lubricant compressor, a pluralityof bearings requiring my name this 9th lubrication, a plurality ofseparate conduits each having one end connected to one of said bearings,the other ends of said conduits being arranged in close proximity, andmeans connected to said compressor for simultaneously making quickdetachable connections with the proximate ends of said conduits, wherebylubricant may be forced into said bearings upon making said connection.L

29. In combination-with a machine having bearings thereon, a plateconnected with said -machine, oil inlet fittings, to which a grease 'gunmay be detachably connected, on said plate, and a plurz .ity of oilingtubes, each tube connecting an oil inlet fitting and a bearing.'

30. In combination with a machine having bearings thereon, an oildistribution plate connected with said machine, oil inlet fittings, towhich'a grease gun may be detachably connected, on said plate, eachfitting comprising a valve, and a plurality of tubes, each tubeconnecting a. bearing andkan oil inlet fitting 31; The combination witha machine having a plurality of bearings thereon,of an in'- dividuallubricating conduit for each of said plurality of bearings, each conduitbeing pro-, videdwith a fitting to which a force pump may bedetachablyconnected and which includes an inlet valve part through whichthe lubricant may beforced by said pump, and

means for supporting said fittings in a ily accessible group on saidmachine.

32. The combination with a machine h'av-' ing a plurality of bearingsthereon, of an individual lubricating conduit for each of said pluralityof bearings, each conduit being provided with a fitting to which a forcepump may be'detachably connected andwhich inreadcludes an inlet valvepart through which the lubricant may be forced by said pump, and

meansf or assembling said fittings in a group on saidmachine forfacilitating'the lubrication thereof. r

33. In a lubricating system for a machine, including a plurality ofwidely separated bearings to be lubricated, a separate lubricantconveying tubev for each bearing connected at one end to said bearingand provided at its other end with a lubricant receiving fitting,

all of said tubes leading to a conveniently accessible plate, and allofsaid fittings being mounted on said plate in proximity to each other forseparately receiving lubricant from r a high pressure lubricant? gun,the lubricant being forced through the fitting and" its associated'tubeto the'selected bearings to be lubricated. able relative to saidcompressor, and 'interen- In witness where of, hereunto subscribe day ofOctober, 12931. ERNEST W. DAVIS,-

